1.	Solve .
		A.	-1	B.	0
		C.	2	D.	no real solution
		Hint
	2.	Solve.
		A.	no solution	B.	{1, –1}
		C.	–1	D.	1
		Hint
	3.	Suppose the formula represents the relationship between a plane's length L and the pounds P its wings can lift, where k is a constant of proportionality calculated for a plane. If its wings are 150 feet and k = 0.1669, what range of values are possible for weight?
		A.	less than 134,811 pounds	B.	greater than 3755 pounds
		C.	less than 3755 pounds	D.	greater than 134,811 pounds
		Hint
	4.	Solve.
		A.	{5, 8}	B.	{6, 7}
		C.	8 only	D.	7 only
		Hint
	5.	Suppose the formula represents the relationship between a plane's length L and the pounds P its wings can lift, where k is a constant of proportionality calculated for a plane. If a plane must be able to support 300,000 pounds and its wings are 180 feet, what is the value of k?
		A.	0.0245	B.	0.573
		C.	0.108	D.	0.0006
		Hint